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  • 1
    Electronic Resource
    Electronic Resource
    Gespannte Anthrachinonophane und Anthracenophane (1980)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 113 (1980), S. 676-689 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Strained Anthraquinonophanes and AnthracenophanesThe clamped anthraquinonophane 3 and anthracenophanes 4, 5 have been synthesized. Their spectroscopic properties are compared with those of the open chained compounds 8 and 10 and the corresponding phanes (12a - 15a and 16 - 18) with longer bridges. The clamping causes significant hypsochromic shifts in the UV spectra and distinct shifts in the 1H-/13C-NMR-spectra. Reaction of the anthraquinonophane 3 with an excess of methyllithium selectively yields the exocyclic methyl-substituted anthracenophane 5.
    Notes: Die verklammerten Anthrachinonophane 3 und Anthracenophane 4, 5 wurden erstmals synthetisiert und ihre spektroskopischen Eigenschaften mit denen offenkettiger (8 und 10) und mit längeren Brücken überspannter (12a - 15a und 16 - 18) Anthrachinone und Anthracene verglichen. Die Verklammerung bedingt signifikante hypsochrome Verschiebungen im UV-Spektrum sowie deutliche Verschiebungen einzelner Signale in den 1H-/13C-NMR-Spektren. Umsetzung des Anthrachinonophans 3 mit überschüssigem Methyllithium führt selektiv zu der exocyclisch methylsubstituierten Anthracenverbindung 5.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19801130225
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  • 2
    Electronic Resource
    Electronic Resource
    Ferroelectric liquid crystals in high information content displaysThe authors gratefully acknowledge helpful discussions with their colleagues G. Illian, D. Jungbauer, A. Kaltheitzei, J. Manero, D. Ohlendorf, N. Rösch, H. Schlosser, and P. Wegener. [AMRI I4] (1992)
    Weinheim : Wiley-Blackwell
    Advanced Materials 4 (1992), S. 189-197 
    Details
    ISSN: 0935-9648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/adma.19920040309
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  • 3
    Electronic Resource
    Electronic Resource
    2-Oxosulfonamide, III. Reaktion von 2-Oxopropansulfonamid mit 2-Chlorbenzaldehyd und anderen substituierten Benzaldehyden (1986)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 119 (1986), S. 1077-1082 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 2-Oxosulfonamides, III. Reaction of 2-Oxopropanesulfonamide with 2-Chlorobenzaldehyde and other Substituted Benzaldehydes2-Oxopropanesulfonamide (1) reacts with m- und p-substituted benzaldehydes to yield 1,4,3-oxathiazinanes (3), but with 2-chlorobenzaldehyde the novel 1,5,2,6-dithiadiazocane 4a is formed. Its structure is confirmed by X-ray structure analysis. As this system is formed also by reaction of other o-substituted benzaldehydes with 1, steric interactions are thought to be decisive for the different course of the reaction, and a common intermediate is discussed.
    Notes: 2-Oxopropansulfonamid (1) reagiert mit m- und p-substituierten aromatischen Aldehyden vom Typ des Benzaldehyds zu 1,4,3-Oxathiazinanen (3), mit 2-Chlorbenzaldehyd hingegen zum neuartigen 1,5,2,6-Dithiadiazocan 4a, dessen Identität durch Röntgenstrukturanalyse gesichert wird. Da auch weitere o-substituierte Benzaldehyde mit 1 dieses System bilden, werden sterische Wechselwirkungen als entscheidend für den unterschiedlichen Reaktions-verlauf angenommen, wobei eine gemeinsame Zwischenstufe diskutiert wird.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19861190327
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  • 4
    Electronic Resource
    Electronic Resource
    2-Oxosulfonamide, II. Reaktionen von 2-Oxosulfonamiden mit Carbonylverbindungen (1985)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1985 (1985), S. 579-588 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 2-Oxosulfonamides, II. - Reactions of 2-Oxosulfonamides with Carbonyl CompoundsIn reactions with carbonyl compounds 2-oxosulfonamides not only act monofunctionally as ketones, active-hydrogen compounds or sulfonamides, but often they react bifunctionally with formation of cyclic compounds. They thus can serve as novel building blocks for the synthesis of heterocycles.
    Notes: In Reaktionen mit Carbonylverbindungen fungieren 2-Oxosulfonamide nicht nur monofunktionell als Keton, methylenaktive Verbindung oder Sulfonamid, sondern häufig auch bifunktionell unter Bildung cyclischer Verbindungen. Sie können somit als neuartige Bausteine für die Synthese von Heterocyclen dienen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198519850319
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